Konsumsi Vitamin C Berlebihan Bisa Sebabkan Batu Ginjal, Ketahui Batas Amannya

konsumsi vitamin c berlebihan bisa sebabkan batu ginjal, ketahui batas amannya

Ilustrasi vitamin C

KOMPAS.com – Mengonsumsi vitamin C secara berlebihan bisa menyebabkan seseorang menderita batu ginjal.

Batu ginjal atau nefrolitiasis ini terjadi ketika benda mirip batu terbentuk di dalam ginjal atau saluran kemih.

Sementara diketahui, vitamin C tidak bisa diproduksi oleh tubuh. Sehingga, seseorang perlu mengonsumsi makanan yang mengandung vitamin C, seperti sayur dan buah, serta suplemen.

Vitamin C tersebut bermanfaat untuk menjaga kesehatan mata, mencegah penuaan kulit, dan mendukung sistem kekebalan tubuh.

Lantas, mengapa konsumsi vitamin C berlebihan bisa sebabkan batu ginjal? Dan berapa batas aman konsumsinya?

Vitamin C dan batu ginjal

Dikutip dari MedicalNewsToday, terdapat empat jenis batu ginjal yang bisa diderita oleh seseorang sesuai dengan penyebabnya, yakni kalsium oksalat, asam urat, sistin, dan struvit.

Batu ginjal kalsium oksalat adalah bentuk paling umum dari penyakit ini, dan bisa disebabkan oleh konsumsi vitamin C yang berlebihan.

Asupan vitamin C yang masuk ke dalam tubuh akan diproses dengan diserap melalui ginjal dan disalurkan ke pembuluh darah.

Meski begitu, tidak semua vitamin C yang masuk ke tubuh akan diserap, sehingga sisanya akan dikeluarkan melalui urine.

Ketika tubuh memecah vitamin C ini untuk diserap, vitamin akan diubah menjadi senyawa yang bernama oksalat.

Asupan vitamin C yang berlebihan akan menyebabkan oksalat tersebut menumpuk di dalam ginjal.

Jika terus menumpuk, oksalat tersebut akan mengkristal dan pada akhirnya menyebabkan batu ginjal.

Seseorang mungkin dapat mengeluarkan batu ginjal kecil tanpa banyak rasa sakit dan tanpa sadar.

Namun, batu ginjal yang lebih besar dapat tersangkut di dalam ginjal atau saluran kemih dan memicu rasa sakit luar biasa.

Batas aman konsumsi vitamin C

Dilansir dari HealthLine, direkomendasikan untuk mengonsumsi vitamin C tidak lebih dari 2.000 miligram (mg) per hari bagi orang dewasa.

Menurut penelitian, orang dewasa sebenarnya hanya membutuhkan vitamin C antara 75-90 mg per hari.

Namun, seorang perokok mungkin memerlukan tambahan 35 mg vitamin C. Sebab, merokok dapat mengurangi kadar vitamin C karena meningkatkan stres oksidatif di dalam tubuh.

Lebih lanjut, vitamin C yang diperoleh dari makanan kemungkinan besar tidak cukup tinggi untuk menyebabkan batu ginjal.

Sumber sayur dan buah yang kaya akan vitamin C adalah seperti brokoli, kol, blewah, tomat, jeruk, stroberi, dan kentang.

Oleh sebab itu, alangkah baiknya jika mencukupi kebutuhan vitamin C tubuh dengan bahan-bahan alami.

Namun jika seseorang ingin mengonsumsi suplemen vitamin C untuk mencukupi asupan hariannya, maka sebaiknya berkonsultasi terlebih dahulu dengan dokter.

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